. (2002). . (e123809). Strategy, 9(4), e123809
. "" .e123809 , Strategy, 9, 4, 2002, e123809.
. (2002). '', Strategy, 9(4), e123809.
, "," Strategy, 9 4 (2002): e123809,
. . Strategy. 2002;9(4):e123809 (In Persian).
